Sash-lock.



No. 829,825. PATENTED. AUG. 28, 190 A. P. ALEXANDER.

SASH LOCK.

APPLICATION FILED SEPT. 30. 1905.

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ARTHUR F. ALEXANDER, OF HUNT, ILLINOIS, ASSIGNOR OF ONE-HALF TO EDWARDK. MOREY, OF HUNT, ILLINOIS.

sAsH-LocK.

Specification of Letters Patent.

Patented Aug. 28, 1906.

T [t7] whom, it away concern:

Be it known that I, ARTHUR F. ALEXAN- DER, a citizen of the UnitedStates,residing at Hunt city, in the county of Jasper and State ofIllinois, have invented new and useful Improvements in Sash-Locks, ofwhich the following is a specification.

This invention relates to sash-locks, and has for its objects to producea comparatively simple inexpensive device of this character which may bereadily applied for use, one which in practice will lock the windowsecurely in closed position, and one which will maintain the window atany desired point when open.

A further object of the invention is to provide a device of thischaracter in which the locking member or bolt will be securely fixedagainst movement when in either engaging or non-engaging position, onewherein the latch member will be securely maintained in non-engagingposition and will when released move automatically to active position.

With these and other objects in view the invention comprises the novelfeatures of construction and combination of parts more fully hereinafterdescribed.

In the accompanying drawings, Figure 1 is a front elevation of a windowand its casing, showing my improved lock applied for use. Fig. 2 is adetail view of the lock and ratchetbar, the latter being in section andthe side plate of the lock-casing removed and showing the locking andlatching members engaged with the ratchet-bar. Fig. 3 is a similar viewshowing the locking and latching members in retracted inactive position,and Fig. 4 is a rear elevation of the lock.

Referring to the drawings, 1 designates a window, 2 its sash, and 3 thewindow-frame, these parts being of the usual or any approvedconstruction or material, inasmuch as they constitute no part of theinvention.

Attached to the frame 3 is a vertically-disposed rack bar or member 4,provided with teeth 5 and having adjacent its lower end a socket orkeeper 6, the bar being attached to the frame by means of fasteningmembers or screws 7.

Attached to the sash 2 by fastening members or screws 8 is a lock-casing9, having a removable front plate 10, secured in place by the screws 8,said casing being provided in its rear edge wall with an opening 10 andhaving'in its front edge wall, which in practice alines with the bar 4,an opening 11 and in its bottom edge wall an opening 12, which lattercommunicates with a socket or guide way 13, formed within the casing andextended transversely thereof, said. socket being designed to aline withthe socket or keeper 6.

Pivoted in the casing 9 by means of a pintle 14 is a latching member 15,designed to project through the opening 11 for engagement with the teeth5 and having at its rear end. a curved bearing-face 16, engaged by thecorresponding curved head or end 17 of an operating member or lever 18,pivoted on a pintle 19 and projecting at its rear end through theopening 10, the latch member being acted upon by a spring 20, seated ina suitable socket 21 in the casing and bearing upon the member 15 at apoint in advance of its fulcrum 14, it being noted that theoperating-lever 18 serves when the parts are in position, as illustratedin Fig. 3, to maintain the latch member in inactive position and thespring compressed.

Slidably disposed in the socket or guideway 13 is a locking member orbar 22, designed for operation by a member or lever 23, projectingthrough the opening 12 and pivoted to the casing by a pintle 24, therebeing formed in the bar 22 a recess 25 to receive the end of lever 23,while the recess is provided with inclined portions or faces 26 27,constituting bearings for the inner terminal of lever 23 to lock the barin engaging or non-engaging position.

In practice when the window is in closed position the bar 22 may bemoved into engagement with the socket or keeper 6 for locking thewindow, under which condition the inner end of lever 23 will bear upontheinclined face 26 to lock the bar against movement, as heretoforeexplained, while, 011 the other hand, when the bar is in inactiveposition, as seen in Fig. 3, it will be locked against movement owing toengagement of the lever 23 with the inclined bearing portion of face 27.When the window is in raised or open position, the latching member 15may be engaged with the rack-bar 4 by swinging lever 18 to the positionillustrated in Fig. 2, thus allowing the spring 20 to expand and throwthe latching member to active or engaging position, as will be readilyunderstood.

Attached to the upper sash of the Window is a casing 9, containing alocking and latching mechanism identical in construction and operationwith that above described, there being attached to the frame 3 a secondbar 4, designed to cooperate with the locking and latching members forsecuring the upper sash in closed or lowered position, it being understood that the socket 6 in the upper rack-bar will be disposed adjacentthe upper end of the latter, While the teeth 5 will be pitched inreverse direction relative to the lower bar 4.

From the foregoing it is apparent that I produce a comparatively simpleinexpensive device admirably adapted for the attainment of the ends inView, it being understood that minor changes in the details herein setforth may be resorted to Without departing from the spirit of theinvention.

Having thus described the invention, what I claim as new is In a deviceof the class described, a toothed v bar adapted to be attached to awindowframe and provided adjacent its lower end with a socket, of acasing designed for athaving inclined faces for engagement by the leverto lock the bolt respectively in engaging or non-engaging position, alatching member pivoted in the casing and adapted for engagement withthe teeth on the bar to hold. the sash in open position, a springarranged in the casing for moving the latching member to engagingposition and a pivoted operatinglever for moving the latching member tonon-engaging position, said latching member and lever being providedWith cam-faces adapted for cooperation to lock the latching member ininactive position.

In testimony whereof I aiiiX my signature in presence of two Witnesses.

ARTHUR F. ALEXANDER.

Witnesses:

VIOLA ALEXANDER, ISAAC M. HARRIsoN.

